The genotype for a pea plant that is homozygous recessive for both height and pea color would be:
a. tt.
b. YY.
c. TtYy.
d. ttyy.
e. TTYY
d
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Why might an individual with an STI need to be checked for other STIs, even though he/she has no symptoms of any others?
A. Several STI-causing pathogens are known to 'piggy back' on each other, being carried into the genital tract together. B. A diagnosis of an STI implies that the individual engaged in unprotected sexual intercourse. Several STIs are largely asymptomatic, so it is wise to test for a variety of typical STIs when the patient admits to or shows signs of engaging in such risky behavior. C. They don't need to be tested-all STIs are highly obviously symptomatic, so there is no need to test for other diseases than the one currently manifesting itself in the patient. D. It's a public health issue-it's best to know who is positive for what in the population of sexually-active individuals. This lets healthcare professionals act to best safeguard the population as a whole from the range of STIs.
An endergonic reaction is a reaction that
A. requires an input of energy. B. typically builds complex molecules from smaller molecules. C. releases energy to its surroundings. D. Both releases energy to its surroundings and typically builds complex molecules from smaller molecules are correct. E. Both requires an input of energy and typically builds complex molecules from smaller molecules are correct.
What is the product of transcription?
A. protein B. RNA C. DNA D. genes E. All of the choices are correct.
Nondisjunction could occur during ________
A) prophase I B) metaphase C) telophase D) anaphase II